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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Sep 17, 2025
Profile Activity
Topics: 17 / Replies: 2149
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RE: Simulation of ASHP with Gas boiler as part of decision process

That is certainly possible for the pipework, though the radiators are matched, plus a bit, to the 12kW heat loss, ie they are unlikely to be a bottlen...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

Unless it happens either (a) when you are asleep or (b) when you are out! Also bear in mind we only have to account for very roughly a doubling of the...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

I think that is very likely, but I didn't notice either because it happened overnight, or during the day when I was out or active. The other thing is ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

Me too. The only explanation I can come up with is that I fine tuned the timing so that I only heated the house when necessary, morning and evening. P...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Simulation of ASHP with Gas boiler as part of decision process

@jamespa - an update on historical oil use. I was going through some old papers recently and came across delivery slips and invoices for oil deliverie...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The good, the bad and the not that great – my heat pump installation

I and some other Midea heat pump owners came up against this a while back. The problem is almost certainly rounding errors, as all the values are inte...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to Solve Mould and Mildew Issues in Renovated Properties

Indeed, and it is a complex area. My primary observation (I have an old leaky grade II listed building) is that installing a heat pump appears to have...

12 months ago
Forum
Your Home
Reply
RE: Midea ASHP – how to set weather compensation

@mphb - thanks, a useful link. Using google translate, I found the post contains this: "There are 8 heating curves pre-programmed, with "1" being th...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

That is exactly what weather compensation is, and it is what you want. One zone, no TRVs (with very rare exceptions) and weather compensation. Strictl...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@iwolf - I have a very similar if not the same heat pump. Yours has a suffix, perhaps that means it is the German model. I don't speak German I'm afra...

12 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: (Controversy Warning) Is it time to relax Listed Status for Insulation purposes?

My reading of the rules is that secondary glazing is definitely OK in listed building. The only alteration is a removable magnetic strip, on a par wit...

12 months ago
Forum
Insulation
Reply
RE: (Controversy Warning) Is it time to relax Listed Status for Insulation purposes?

Hmm, the joys of old buildings! Are the metal frames mounted in wooden frames, as is often the case? If so, and enough exposed surface is available, t...

12 months ago
Forum
Insulation
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